the man identified as suspect number two, the man in the white cap is at large. the evening began, apparently, with an attempted hold up at a 7-eleven store. video from inside the store matched the suspect number two from the marathon bombings. at that point they went and tried to steal a car, a mercedes suv. in the interim they shot and killed, according to state police, a police officer at m.i.t., another transit police officer was wounded. the chase continued here to watertown with explosives, according to authorities. the people in the car were shooting and throwing hand grenades. there was a shootout and at that point suspect number one, whose name we do not know, was shot. suspect number two escaped and now a huge manhunt o this area for suspect number two.